Colonel Plug is a collaboration beer with Ray Spangler, American Homebrewers Association Homebrewer of the Year in 1987 and the founder of the Bloatarian Brewing League in Cincinnati. Spangler and head brewer Kevin Moreland decided to revive one of the three beer styles that originated in the U.S: Kentucky Common, the brewery said.

Kentucky Common is a sour mash beer that had an 18-hour mash before it was boiled to naturally sour the beer. The beer was then aged in an American oak cask.